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Almeida GHDR, da Silva-Júnior LN, Gibin MS, Dos Santos H, de Oliveira Horvath-Pereira B, Pinho LBM, Baesso ML, Sato F, Hernandes L, Long CR, Relly L, Miglino MA, Carreira ACO. Perfusion and Ultrasonication Produce a Decellularized Porcine Whole-Ovary Scaffold with a Preserved Microarchitecture. Cells 2023; 12:1864. [PMID: 37508528 PMCID: PMC10378497 DOI: 10.3390/cells12141864] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Revised: 04/17/2023] [Accepted: 04/18/2023] [Indexed: 07/30/2023] Open
Abstract
The application of decellularized scaffolds for artificial tissue reconstruction has been an approach with great therapeutic potential in regenerative medicine. Recently, biomimetic ovarian tissue reconstruction was proposed to reestablish ovarian endocrine functions. Despite many decellularization methods proposed, there is no established protocol for whole ovaries by detergent perfusion that is able to preserve tissue macro and microstructure with higher efficiency. This generated biomaterial may have the potential to be applied for other purposes beyond reproduction and be translated to other areas in the tissue engineering field. Therefore, this study aimed to establish and standardize a protocol for porcine ovaries' decellularization based on detergent perfusion and ultrasonication to obtain functional whole-ovary scaffolds. For that, porcine ovaries (n = 5) were perfused with detergents (0.5% SDS and 1% Triton X-100) and submitted to an ultrasonication bath to produce acellular scaffolds. The decellularization efficiency was evaluated by DAPI staining and total genomic DNA quantification. ECM morphological evaluation was performed by histological, immunohistochemistry, and ultrastructural analyses. ECM physico-chemical composition was evaluated using FTIR and Raman spectroscopy. A cytocompatibility and cell adhesion assay using murine fibroblasts was performed. Results showed that the proposed method was able to remove cellular components efficiently. There was no significant ECM component loss in relation to native tissue, and the scaffolds were cytocompatible and allowed cell attachment. In conclusion, the proposed decellularization protocol produced whole-ovaries scaffolds with preserved ECM composition and great potential for application in tissue engineering.
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Affiliation(s)
| | | | | | - Henrique Dos Santos
- Department of Physics, State University of Maringá, Maringá 87020-900, Brazil
| | | | - Leticia Beatriz Mazo Pinho
- Department of Surgery, School of Veterinary Medicine and Animal Science, University of São Paulo, São Paulo 05508-270, Brazil
| | | | - Francielle Sato
- Department of Physics, State University of Maringá, Maringá 87020-900, Brazil
| | - Luzmarina Hernandes
- Department of Morphological Sciences, State University of Maringa, Maringá 87020-900, Brazil
| | - Charles R Long
- Department of Veterinary Physiology and Pharmacology, School of Veterinary Medicine & Biomedical Sciences, Texas A&M University, College Station, TX 77843, USA
| | - Luciana Relly
- Department of Veterinary Physiology and Pharmacology, School of Veterinary Medicine & Biomedical Sciences, Texas A&M University, College Station, TX 77843, USA
| | - Maria Angelica Miglino
- Department of Surgery, School of Veterinary Medicine and Animal Science, University of São Paulo, São Paulo 05508-270, Brazil
| | - Ana Claudia Oliveira Carreira
- Department of Surgery, School of Veterinary Medicine and Animal Science, University of São Paulo, São Paulo 05508-270, Brazil
- Centre for Natural and Human Sciences, Federal University of ABC, Santo André, São Paulo 09210-580, Brazil
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Weinand WR, Cruz JA, Medina AN, Lima WM, Sato F, da Silva Palacios R, Gibin MS, Volnistem EA, Rosso JM, Santos IA, Rohling JH, Bento AC, Baesso ML, da Silva CG, Dos Santos EX, Scatolim DB, Gavazzoni A, Queiroz AF, Companhoni MVP, Nakamura TU, Hernandes L, Bonadio TGM, Miranda LCM. Dynamics of the natural genesis of β-TCP/HAp phases in postnatal fishbones towards gold standard biocomposites for bone regeneration. Spectrochim Acta A Mol Biomol Spectrosc 2022; 279:121407. [PMID: 35636138 DOI: 10.1016/j.saa.2022.121407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Revised: 04/27/2022] [Accepted: 05/15/2022] [Indexed: 06/15/2023]
Abstract
The search for gold-standard materials for bone regeneration is still a challenge in reconstruction surgery. The ratio between hydroxyapatite (HAp) and β-tricalcium phosphate (β-TCP) in biphasic calcium phosphate ceramics (BCPs) is one of the most important factors in osteoinduction promotion and controlled biodegradability, configurating what is currently considered as a possible gold standard material for bone substitution in reconstructive surgery. Exploring the natural genesis of the HAp and β-TCP phases in fishbones during their postnatal growth, this study developed a biphasic bioceramic obtained from the calcination of Nile tilapia (Oreochromis niloticus) bones as a function of their ages. The natural genesis dynamics of the structural evolution of the β-TCP and HAp phases were characterized by physicochemical methods, taking into account of the age of the fish and the material processing conditions. Thermal analysis (TGA / DTA) showed complete removal of the organic matter and transitions associated with the transformation of carbonated hydroxyapatite (CDHA) to HAp and β-TCP phases. After calcination at 900 °C, the material was characterized by: X-ray diffraction (XRD) and refinement by the Rietveld method; Fourier Transform Infrared Spectroscopy with Attenuated Total Reflection (FTIR-ATR); Raman spectroscopy; Scanning Electron Microscopy (SEM) and Flame Atomic Absorption Spectroscopy (FAAS). The analysis allowed identification and quantitative estimate of the variations of the HAp and β-TCP phases in the formation of the BCPs. The results showed that the decrease in β-TCP against the increase in the HAp phases is symmetrical to the dynamics of the natural genesis of these phases, surprisingly maintaining the balanced phase proportion even when bones of young fishes were used. The microstructure analysis confirms the observed transformation. In addition, in vivo tests demonstrated the osteoinductive potential of BCP scaffolds implanted in an ectopic site, and their remarkable regenerative functionality, as bone graft, was demonstrated in alveolar bone after tooth extraction. MTT cytotoxicity assay for BCP samples for MC3T3-E1 pre-osteoblasts and L929 fibroblasts cells showed viability equal or higher than 100%. A logistic empirical model is presented to explain the three stages of HAp natural formation with fish age and it is also compared to the fish size evolution.
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Affiliation(s)
- Wilson Ricardo Weinand
- Departamento de Física, Universidade Estadual de Maringá, Av. Colombo 5790, 87020-900 Maringá, Paraná, Brazil
| | - José Adauto Cruz
- Departamento de Física, Universidade Estadual de Maringá, Av. Colombo 5790, 87020-900 Maringá, Paraná, Brazil
| | - Antonio Neto Medina
- Departamento de Física, Universidade Estadual de Maringá, Av. Colombo 5790, 87020-900 Maringá, Paraná, Brazil
| | - Walter Moreira Lima
- Departamento de Física, Universidade Estadual de Maringá, Av. Colombo 5790, 87020-900 Maringá, Paraná, Brazil
| | - Francielle Sato
- Departamento de Física, Universidade Estadual de Maringá, Av. Colombo 5790, 87020-900 Maringá, Paraná, Brazil
| | - Raquel da Silva Palacios
- Departamento de Física, Universidade Estadual de Maringá, Av. Colombo 5790, 87020-900 Maringá, Paraná, Brazil
| | - Mariana Sversut Gibin
- Departamento de Física, Universidade Estadual de Maringá, Av. Colombo 5790, 87020-900 Maringá, Paraná, Brazil
| | - Eduardo Azzolini Volnistem
- Departamento de Física, Universidade Estadual de Maringá, Av. Colombo 5790, 87020-900 Maringá, Paraná, Brazil
| | - Jaciele Marcia Rosso
- Departamento de Física, Universidade Estadual de Maringá, Av. Colombo 5790, 87020-900 Maringá, Paraná, Brazil
| | - Ivair Aparecido Santos
- Departamento de Física, Universidade Estadual de Maringá, Av. Colombo 5790, 87020-900 Maringá, Paraná, Brazil
| | - Jurandir Hillmann Rohling
- Departamento de Física, Universidade Estadual de Maringá, Av. Colombo 5790, 87020-900 Maringá, Paraná, Brazil
| | - Antonio Carlos Bento
- Departamento de Física, Universidade Estadual de Maringá, Av. Colombo 5790, 87020-900 Maringá, Paraná, Brazil
| | - Mauro Luciano Baesso
- Departamento de Física, Universidade Estadual de Maringá, Av. Colombo 5790, 87020-900 Maringá, Paraná, Brazil.
| | - Camila Girotto da Silva
- Departamento de Ciências Morfológicas, Universidade Estadual de Maringá, Av. Colombo 5790, 87020-900 Maringá, Paraná, Brazil
| | - Erika Xavier Dos Santos
- Departamento de Ciências Morfológicas, Universidade Estadual de Maringá, Av. Colombo 5790, 87020-900 Maringá, Paraná, Brazil
| | - Douglas Bolzon Scatolim
- Departamento de Ciências Morfológicas, Universidade Estadual de Maringá, Av. Colombo 5790, 87020-900 Maringá, Paraná, Brazil
| | - Alessandro Gavazzoni
- Departamento de Odontologia, Universidade Estadual de Maringá, Av. Mandacarú, 1550, 87083-170 Maringá, Paraná, Brazil
| | - Alfredo Franco Queiroz
- Departamento de Odontologia, Universidade Estadual de Maringá, Av. Mandacarú, 1550, 87083-170 Maringá, Paraná, Brazil
| | | | - Tania Ueda Nakamura
- Departamento de Ciências Básicas da Saúde, Universidade Estadual de Maringá, Av. Colombo 5790, 87020-900 Maringá, Paraná, Brazil
| | - Luzmarina Hernandes
- Departamento de Ciências Morfológicas, Universidade Estadual de Maringá, Av. Colombo 5790, 87020-900 Maringá, Paraná, Brazil
| | - Taiana Gabriela Moretti Bonadio
- Departamento de Física, Universidade Estadual do Centro Oeste, Alameda Élio Antonio Dalla Vecchia, 838, 85040-167 Guarapuava, Paraná, Brazil
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Truite CVR, Noronha JNG, Prado GC, Santos LN, Palácios RS, do Nascimento A, Volnistem EA, da Silva Crozatti TT, Francisco CP, Sato F, Weinand WR, Hernandes L, Matioli G. Bioperformance Studies of Biphasic Calcium Phosphate Scaffolds Extracted from Fish Bones Impregnated with Free Curcumin and Complexed with β-Cyclodextrin in Bone Regeneration. Biomolecules 2022; 12:biom12030383. [PMID: 35327575 PMCID: PMC8946016 DOI: 10.3390/biom12030383] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Revised: 01/12/2022] [Accepted: 01/18/2022] [Indexed: 01/16/2023] Open
Abstract
Fish bones are a natural calcium phosphate (CaP) sources used in biomaterials production for bone regeneration. CaP scaffolds can be enriched with other substances with biological activity to improve bone repair. This study aimed to evaluate the physicochemical properties and bone regeneration potential of biphasic calcium phosphate (BCP) scaffolds impregnated with free curcumin (BCP-CL) or complexed with β-cyclodextrin (BCP-CD) compared to BCP scaffolds. Rietveld’s refinement showed that BCP is composed of 57.2% of HAp and 42.8% of β-TCP and the molar ratio of Ca/P corresponds to 1.59. The scaffolds presented porosity (macro and microporosity) of 57.21%. Apatite formation occurred on the BCP, BCP-CL, and BCP-CD surface, in vitro, in SBF. Micro-Raman technique showed a reduction in the dissolution rate of β-TCP in the curcumin-impregnated scaffolds over time, and in vivo studies on critical-size defects, in rat calvaria, had no additional regenerative effect of BCP-CL and BCP-CD scaffolds, compared to BCP scaffolds. Despite this, the study showed that curcumin impregnation in BCP scaffolds prolongs the release of the β-TCP phase, the BCP- phase with the higher osteoinductive potential, representing an advantage in tissue engineering.
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Affiliation(s)
- Cecilia V. R. Truite
- Department of Pharmacy, State University of Maringá (UEM), 5790 Colombo Avenue, Maringá 87020-900, PR, Brazil
- Correspondence: (C.V.R.T.); (G.M.); Tel.: +55-44-30113868 (G.M.)
| | - Jessica N. G. Noronha
- Department of Morphological Sciences, State University of Maringá (UEM), 5790 Colombo Avenue, Maringá 87020-900, PR, Brazil; (J.N.G.N.); (G.C.P.); (L.N.S.); (L.H.)
| | - Gabriela C. Prado
- Department of Morphological Sciences, State University of Maringá (UEM), 5790 Colombo Avenue, Maringá 87020-900, PR, Brazil; (J.N.G.N.); (G.C.P.); (L.N.S.); (L.H.)
| | - Leonardo N. Santos
- Department of Morphological Sciences, State University of Maringá (UEM), 5790 Colombo Avenue, Maringá 87020-900, PR, Brazil; (J.N.G.N.); (G.C.P.); (L.N.S.); (L.H.)
| | - Raquel S. Palácios
- Department of Physics, State University of Maringá (UEM), 5790 Colombo Avenue, Maringá 87020-900, PR, Brazil; (R.S.P.); (A.d.N.); (E.A.V.); (F.S.); (W.R.W.)
| | - Adriane do Nascimento
- Department of Physics, State University of Maringá (UEM), 5790 Colombo Avenue, Maringá 87020-900, PR, Brazil; (R.S.P.); (A.d.N.); (E.A.V.); (F.S.); (W.R.W.)
| | - Eduardo A. Volnistem
- Department of Physics, State University of Maringá (UEM), 5790 Colombo Avenue, Maringá 87020-900, PR, Brazil; (R.S.P.); (A.d.N.); (E.A.V.); (F.S.); (W.R.W.)
| | - Thamara T. da Silva Crozatti
- Department of Food Engineering, State University of Maringá (UEM), 5790 Colombo Avenue, Maringá 87020-900, PR, Brazil;
| | - Carolina P. Francisco
- Department of Chemical Engineering, State University of Maringá (UEM), 5790 Colombo Avenue, Maringá 87020-900, PR, Brazil;
| | - Francielle Sato
- Department of Physics, State University of Maringá (UEM), 5790 Colombo Avenue, Maringá 87020-900, PR, Brazil; (R.S.P.); (A.d.N.); (E.A.V.); (F.S.); (W.R.W.)
| | - Wilson R. Weinand
- Department of Physics, State University of Maringá (UEM), 5790 Colombo Avenue, Maringá 87020-900, PR, Brazil; (R.S.P.); (A.d.N.); (E.A.V.); (F.S.); (W.R.W.)
| | - Luzmarina Hernandes
- Department of Morphological Sciences, State University of Maringá (UEM), 5790 Colombo Avenue, Maringá 87020-900, PR, Brazil; (J.N.G.N.); (G.C.P.); (L.N.S.); (L.H.)
| | - Graciette Matioli
- Department of Pharmacy, State University of Maringá (UEM), 5790 Colombo Avenue, Maringá 87020-900, PR, Brazil
- Correspondence: (C.V.R.T.); (G.M.); Tel.: +55-44-30113868 (G.M.)
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Moreira LS, Chagas AC, Ames-Sibin AP, Pateis VO, Gonçalves OH, Silva-Comar FMS, Hernandes L, Sá-Nakanishi AB, Bracht L, Bersani-Amado CA, Bracht A, Comar JF. Alpha-tocopherol-loaded polycaprolactone nanoparticles improve the inflammation and systemic oxidative stress of arthritic rats. J Tradit Complement Med 2021; 12:414-425. [PMID: 35747358 PMCID: PMC9209870 DOI: 10.1016/j.jtcme.2021.12.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2020] [Revised: 12/16/2021] [Accepted: 12/20/2021] [Indexed: 02/07/2023] Open
Abstract
Background and aim The present study investigated the effects of orally administered α-tocopherol-loaded polycaprolactone nanoparticles on the articular inflammation and systemic oxidative status of middle-aged Holtzman rats with Freund's adjuvant-induced polyarthritis, a model for rheumatoid arthritis. Intraperitoneally administered free α-tocopherol provided the reference for comparison. Experimental procedure Two protocols of treatment were followed: intraperitoneal administration of free α-tocopherol (100 mg/kg i.p.) or oral administration of free and nanoencapsulated α-tocopherol (100 mg/kg p.o.). Animals were treated during 18 days after arthritis induction. Results Free (i.p.) and encapsulated α-tocopherol decreased the hind paws edema, the leukocytes infiltration into femorotibial joints and the mRNA expression of pro-inflammatory cytokines in the tibial anterior muscle of arthritic rats, but the encapsulated compound was more effective. Free (i.p.) and encapsulated α-tocopherol decreased the high levels of reactive oxygen species in the brain and liver, but only the encapsulated compound decreased the levels of protein carbonyl groups in these organs. Both free (i.p.) and encapsulated α-tocopherol increased the α-tocopherol levels and the ratio of reduced to oxidized glutathione in these organs. Conclusion Both intraperitoneally administered free α-tocopherol and orally administered encapsulated α-tocopherol effectively improved inflammation and systemic oxidative stress in middle-aged arthritic rats. However, the encapsulated form should be preferred because the oral administration route does not be linked to the evident discomfort that is caused in general by injectable medicaments. Consequently, α-tocopherol-loaded polycaprolactone nanoparticles may be a promising adjuvant to the most current approaches aiming at rheumatoid arthritis therapy. Oxidative stress is systemically increased in rats with adjuvant-induced arthritis. Arthritic rats were orally treated with α-tocopherol-loaded polycaprolactone nanoparticles. Treatment decreased the paw edema and articular inflammation of arthritic rats. Treatment improved the oxidative stress in the liver and brain arthritic rats. The content of α-tocopherol was increased in the brain and liver of treated rats.
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Ferrari Silva B, Barletta F, Pedro RE, Batista ML, Hernandes L, Franzói de Moraes SM, Barnabé Peres S. Concurrent training remodels the subcutaneous adipose tissue extracellular matrix of people living with HIV: a non-randomized clinical trial. Appl Physiol Nutr Metab 2021; 46:1476-1486. [PMID: 34293264 DOI: 10.1139/apnm-2021-0284] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Evaluate the effect of 12wks of concurrent training (CT) in extracellular matrix (ECM) of subcutaneous adipose tissue (SAT) in people living with HIV/aids (PLWHA). To the non-randomized clinical trial 19 participants, 11 healthy (HIV-) and 18 PLWHA under the use of highly active antiretroviral therapy (HAART) for at least 1 year (HIV+). All participants engaged in a moderate-intensity CT program for 12 weeks, three times a week. Before and after CT, aerobic and strength performance were assessed, as well as anthropometry and biochemical blood profile. Also, SAT biopsies were carried out for histologic and morphometric analysis. The statistical analysis was carried out with R Studio, using descriptive and inferential analysis, ANOVA test and mixed-effect model were utilized (P<0.05). HIV+ showed higher levels of VLDL, TGL, and lower levels of HDL in baseline than HIV- (P<0.05). All groups improved aerobic and strength performance (P<0.05). Both groups presented reduced adipocyte sizes after CT (P<0,05). Lastly, HIV+ presented smaller adipocytes and higher elastic fiber deposition in baseline and decreased after training only in HIV+, matching similarly to HIV- group. Thus, CT in PLWHA promoted a decrease in size heterogeneity of adipocytes and elastic fiber deposition, remodeling ECM and improving SAT fibrosis profile. Brazilian Clinical Trials Registry (UTN: U1111-1214-3022) Novelty • Adipose tissue fibrosis is improved by training in people living with HIV. • Concurrent training remodels adipose tissue extracellular matrix.
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Affiliation(s)
- Bruno Ferrari Silva
- State University of Maringá Maringá, Department of Physiological Sciences, Paraná, Brazil;
| | - F Barletta
- State University of Maringá Maringá, Department of Biostatistics, Paraná, Brazil;
| | - R E Pedro
- State University of Londrina, 37894, Department of Physical Education, Londrina, Paraná, Brazil;
| | - Miguel L Batista
- University of Mogi das Cruzes, 133647, Department of Integrated Biotechnology, Mogi das Cruzes, Brazil;
| | - L Hernandes
- State University of Maringá Maringá, Department of Morphological Sciences, Paraná, Brazil;
| | | | - Sidney Barnabé Peres
- Universidade Estadual de Maringa, 42487, Physiological Sciences, Maringa, PR, Brazil;
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Kiyochi Junior HDJ, Candido AG, Bonadio TGM, da Cruz JA, Baesso ML, Weinand WR, Hernandes L. In vivo evaluation of interactions between biphasic calcium phosphate (BCP)-niobium pentoxide (Nb 2O 5) nanocomposite and tissues using a rat critical-size calvarial defect model. J Mater Sci Mater Med 2020; 31:71. [PMID: 32712717 DOI: 10.1007/s10856-020-06414-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2019] [Accepted: 07/15/2020] [Indexed: 06/11/2023]
Abstract
Natural or synthetic biomaterials are increasingly being used to support bone tissue repair or substitution. The combination of natural calcium phosphates with biocompatible alloys is an important route towards the development of new biomaterials with bioperformance and mechanical responses to mimic those of human bones. This article evaluated the structural, physical, mechanical and biological properties of a new mechanical improved nanocomposite elaborated by association of fish biphasic calcium phosphate (BCP) and niobium pentoxide (Nb2O5). The nanocomposite (Nb-BCP) and the pure BCP, used as a positive control, were obtained by powder metallurgy. The density, porosity and microhardness were measured. The structural analysis was determined by X-ray diffraction (XRD) and the biological properties were studied in histological sections of critical size calvaria defects in rats, 7, 15, 30, 45 and 60 days after implantation of disks of both materials. Morphological description was made after scanning electron microscopy (SEM) and optical microscopy analysis. After sintering, the Nb-BCP nanocomposite presented four crystalline phases: 34.36% calcium niobate (CaNb2O6), 21.68% phosphorus niobium oxide (PNb9O25), 42.55% β-tricalcium phosphate (Ca3(PO4)2) and 1.31% of niobium pentoxide (Nb2O5) and exhibited increases of 17% in density, 66% in Vickers microhardness and 180% in compressive strength compared to pure BCP. In vivo study, showed biocompatibility, bioactivity and osteoconductivity similar to pure BCP. SEM showed the formation of globular accretions over the implanted nanocomposites, representing one of the stages of bone mineralization. In conclusion, the BCP and Nb2O5 formed a nanocomposite exhibiting characteristics that are desirable for a biomaterial, such as bioperformance, higher β-TCP percentage and improved physical and mechanical properties compared to pure BCP. These characteristics demonstrate the promise of this material for supporting bone regeneration.
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Affiliation(s)
| | - Aline Gabriela Candido
- Morphologycal Sciences Department, Universidade Estadual de Maringá, Maringá, Paraná, Brazil
| | | | - José Adauto da Cruz
- Physics Department, Universidade Estadual de Maringá, Maringá, Paraná, Brazil
| | | | | | - Luzmarina Hernandes
- Morphologycal Sciences Department, Universidade Estadual de Maringá, Maringá, Paraná, Brazil.
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7
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Correia MH, Sato F, Baesso ML, Bento AC, Gibin MS, de Moraes GR, Melo KS, Svidzinski TIE, Almeida GHDR, Amado CAB, Hernandes L. Immune response and Raman scattering assessment in rats skin after contact with Fusarium oxysporum metabolites. Spectrochim Acta A Mol Biomol Spectrosc 2020; 234:118246. [PMID: 32179464 DOI: 10.1016/j.saa.2020.118246] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/02/2019] [Revised: 02/23/2020] [Accepted: 03/07/2020] [Indexed: 06/10/2023]
Abstract
The secondary metabolites produced by Fusarium can cause disease and death when consumed and produce biological responses even in the absence of the microorganism. The IL-6, TNF-α and TGF-β1 cytokines immune reactivity was associated with histopathological and physico-chemical changes in skin of immune competent rats after administration of Fusarium oxysporum crude extract. Rats were intradermally injected with 50 μl of 0.5 mg/ml crude extract and were euthanized at 3, 6, 12 and 24 h after injection. The inflammatory response was quantified by enzyme myeloperoxidase activity and by immunohistochemical method to detect the IL-6, TNF-α and TGF-β1. Physico-chemical analysis was performed using FT-Raman Spectroscopy. The inflammatory response was most intense at 6 and 12 h after crude extract administration and the most significant histopathological changes were observed in the dermis. Myeloperoxidase activity was intense from 3 to 24 h after injection. The immunostaining of pro-inflammatory cytokines IL-6 and TNF-α peaked at 6 h. Immunostaining for TGF-β1 was highest at 12 and 24 h. FT-Raman spectral analysis showed both, the most intense Fusarium interaction with the skin at 6 h, as revealed by the changes in the stretching of -CH bands (3100-2800 cm-1) in the dermis, and skin recovery trending after 12 h after crude extract injection. The results showed that secondary metabolites stimulated histopathologic changes and inflammatory responses even in the absence of the fungus, increasing myeloperoxidase activity and pro-inflammatory cytokine expression besides promoting physico-chemical changes.
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Affiliation(s)
| | - Francielle Sato
- Physics Department, Universidade Estadual de Maringá, Brazil
| | | | | | | | | | - Kátia Sibin Melo
- Morphological Sciences Department, Universidade Estadual de Maringá, Brazil
| | | | | | | | - Luzmarina Hernandes
- Morphological Sciences Department, Universidade Estadual de Maringá, Brazil.
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Picoli CDC, Gilio GR, Henriques F, Leal LG, Besson JC, Lopes MA, Franzói de Moraes SM, Hernandes L, Batista Junior ML, Peres SB. Resistance exercise training induces subcutaneous and visceral adipose tissue browning in Swiss mice. J Appl Physiol (1985) 2020; 129:66-74. [PMID: 32501777 DOI: 10.1152/japplphysiol.00742.2019] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Aerobic exercise training (AER) may promote several adaptations in white adipose tissue (WAT), including a phenotypic change known as browning. The present study aimed at assessing if resistance exercise training (RES) would be as efficient as AER in inducing a brown-like adipocyte reprogramming in WAT. Thirty Swiss male mice were randomly divided into 3 groups with 10 animals each: 1) sedentary (SED), 2) AER, and 3) RES. After the adaptation training, an incremental test was performed at the beginning of each week to adjust training load. Mice were submitted to 8 wk of AER or RES. After the experimental period, inguinal and retroperitoneal WAT (iWAT and rpWAT) and brown adipose tissue (BAT) were collected. The prescription of AER and RES was effective in increasing the performance of both groups. Also, RES presented a lower body weight than AER/SED. AER and RES reduced the area of iWAT and rpWAT adipocytes and the lipid area of BAT, induced an increase of vascular endothelial growth factor (VEGF) and cluster of differentiation 31 (CD31) and uncoupling protein 1 (UCP-1), and increased the expression of selective genes of brown and beige phenotype in adipocytes after 8 wk. In general, we demonstrated here that AER and RES training similarly induced the browning of iWAT and rpWAT.NEW & NOTEWORTHY Aerobic exercise training (AER) induces the browning of white adipose tissue, turning adipocytes multilocular, highly vascularized and expressing uncoupling protein 1 (UCP-1). The current study compared the efficiency of resistance to aerobic exercise training to promote a brown-like phenotype. Our results suggest that both types of training similarly induce subcutaneous and visceral adipose tissue browning.
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Affiliation(s)
| | - Gustavo Renan Gilio
- Department of Physical Education, State University of Maringá, Maringá-Paraná, Brazil.,Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | - Felipe Henriques
- Department of Integrated Biotechnology Group, University of Mogi das Cruzes, Mogi-São Paulo, Brazil.,Program in Molecular Medicine, University of Massachusetts Medical School, Worcester, Massachusetts
| | - Luana Garcia Leal
- Department of Integrated Biotechnology Group, University of Mogi das Cruzes, Mogi-São Paulo, Brazil
| | - Jean Carlos Besson
- Department of Morphological Sciences, State University of Maringá, Maringá-Paraná, Brazil
| | - Magno Alves Lopes
- Department of Integrated Biotechnology Group, University of Mogi das Cruzes, Mogi-São Paulo, Brazil
| | | | - Luzmarina Hernandes
- Department of Morphological Sciences, State University of Maringá, Maringá-Paraná, Brazil
| | | | - Sidney Barnabé Peres
- Department of Physiological Sciences, State University of Maringá, Maringá-Paraná, Brazil
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9
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Thaiane da Silva T, Cesar GB, Francisco CP, Mossini GG, Castro Hoshino LV, Sato F, Radovanovic E, Silva Agostini DL, Caetano W, Hernandes L, Matioli G. Electrospun curcumin/polycaprolactone/copolymer F‐108 fibers as a new therapy for wound healing. J Appl Polym Sci 2019. [DOI: 10.1002/app.48415] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Thamara Thaiane da Silva
- Postgraduate Program in Food Science, State University of Maringá (UEM), 5790 Colombo Avenue Maringá 87020‐900 PR Brazil
| | - Gabriel Batista Cesar
- Department of ChemistryState University of Maringá (UEM), 5790 Colombo Avenue Maringá 87020‐900 PR Brazil
| | - Carolina Pereira Francisco
- Department of Chemical EngineeringState University of Maringá (UEM), 5790 Colombo Avenue Maringá 87020‐900 PR Brazil
| | - Guilherme Galerani Mossini
- Department of MedicineState University of Maringá (UEM), 5790 Colombo Avenue Maringá 87020‐900 PR Brazil
| | | | - Francielle Sato
- Department of PhysicsState University of Maringá (UEM), 5790 Colombo Avenue Maringá 87020‐900 PR Brazil
| | - Eduardo Radovanovic
- Department of ChemistryState University of Maringá (UEM), 5790 Colombo Avenue Maringá 87020‐900 PR Brazil
| | - Deuber Lincon Silva Agostini
- Department of PhysicsState University of São Paulo (UNESP), 305 Roberto Simonsen Street 19060‐900 Presidente Prudente SP Brazil
| | - Wilker Caetano
- Department of ChemistryState University of Maringá (UEM), 5790 Colombo Avenue Maringá 87020‐900 PR Brazil
| | - Luzmarina Hernandes
- Department of PhysicsState University of Maringá (UEM), 5790 Colombo Avenue Maringá 87020‐900 PR Brazil
- Department of Morphological SciencesState University of Maringá (UEM), 5790 Colombo Avenue Maringá 87020‐900 PR Brazil
| | - Graciette Matioli
- Postgraduate Program in Food Science, State University of Maringá (UEM), 5790 Colombo Avenue Maringá 87020‐900 PR Brazil
- Department of PharmacyState University of Maringá (UEM), 5790 Colombo Avenue Maringá 87020‐900 PR Brazil
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10
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Silva BF, Gilio G, Picoli CC, Pedro RE, Hernandes L, de Moraes SMF, Peres SB. Concurrent Training Induces Remodeling Of Subcutaneous Fat In People Living With Hiv. Med Sci Sports Exerc 2019. [DOI: 10.1249/01.mss.0000562647.83779.b7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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11
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Gavazzoni A, Filho LI, Hernandes L. Analysis of bone formation and membrane resorption in guided bone regeneration using deproteinized bovine bone mineral versus calcium sulfate. J Mater Sci Mater Med 2018; 29:167. [PMID: 30392111 DOI: 10.1007/s10856-018-6167-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2018] [Accepted: 10/11/2018] [Indexed: 06/08/2023]
Abstract
Guided Bone Regeneration (GBR) is a technique based on the use of a physical barrier that isolates the region of bone regeneration from adjacent tissues. The objective of this study was to compare GBR, adopting a critical-size defect model in rat calvaria and using collagen membrane separately combined with two filling materials, each having different resorption rates. A circular defect 8 mm in diameter was made in the calvaria of Wistar rats. The defects were then filled with calcium sulfate (CaS group) or deproteinized bovine bone mineral (DBBM group) and covered by resorbable collagen membrane. The animals were killed 15, 30, 45 and 60 days after the surgical procedure. Samples were collected, fixed in 4% paraformaldehyde and processed for paraffin embedding. The resultant sections were stained with H&E for histological and histomorphometric study. For the histomorphometric study, the area of membrane was quantified along with the amount of bone formed in the region of the membrane. Calcium sulfate was reabsorbed more rapidly compared to DBBM. The CaS group had the highest percentages of remaining membrane at 15, 30, 45 and 60 days, compared to the DBBM group. The DBBM group had the highest amount of new bone at 45 and 60 days compared to the CaS group. Based on these results, it was concluded that the type of filling material may influence both the resorption of collagen membrane and amount of bone formed.
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Affiliation(s)
| | - Liogi Iwaki Filho
- Department of Dentistry, State University of Maringá, Maringá, Paraná, Brazil
| | - Luzmarina Hernandes
- Department of Morphological Sciences, State University of Maringá, Maringá, Paraná, Brazil.
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12
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Oliveira BMB, Ubaldini ALM, Baesso ML, Andrade LHC, Lima SM, Giannini M, Hernandes L, Pascotto RC. Chemical Interaction and Interface Analysis of Self-Etch Adhesives Containing 10-MDP and Methacrylamide With the Dentin in Noncarious Cervical Lesions. Oper Dent 2018; 43:E253-E265. [DOI: 10.2341/17-366-l] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
SUMMARY
Objectives:
To characterize the chemical interactions and analyze the interface of adhesive systems containing 10-methacryloyloxydecyl dihydrogen phosphate (10-MDP) and N-methacryloyl glycine (methacrylamide) functional monomers with the dentin in noncarious cervical lesions (NCCLs) compared with artificial defects (ADs).
Methods and Materials:
Twenty human teeth with natural NCCLs on the buccal surface were used. Class V cavities, similar to NCCLs, were created on the lingual surface to serve as controls. Teeth were randomly allocated to two groups according to the functional monomer in the adhesive (N=10): G1, 10-MDP; and G2, methacrylamide. NCCLs and ADs were characterized by their mineral composition (MC) and degree of demineralization (DD) using micro-Raman spectroscopy, adhesive/dentin chemical interactions (CIs) were assessed with infrared photoacoustic spectroscopy, and interface morphology was evaluated with scanning electron and light microscopy. MC, CI, and DD data were submitted to Shapiro-Wilk and Student t-tests (p<0.05).
Results:
Compared with ADs, dentin in NCCLs was hypermineralized (p<0.05). In G1, CI, and DD in the first 2 μm, and adhesive projections in NCCLs and ADs interfaces were similar. Additionally, a thin layer of dentin collagen was observed in ADs, while it was hardly present in NCCLs. In G2, although CI could not be identified, changes in the mineral components were observed. The DD in the ADs and NCCLs were statistically similar, while SEM showed a lack of adhesion at NCCLs interface. DD and collagen exposure in the ADs and NCCLs were more pronounced than in G1.
Conclusions:
Results suggest that the G1 adhesive could be applied directly on the superficial sclerotic layer in NCCLs. In contrast, previous cavity preparation should be conducted to improve the micromechanical interaction of G2 with the dentin.
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Affiliation(s)
- BMB Oliveira
- Bruna M B Oliveira, DDS, MSc, State University of Maringá, Dentistry, Av Mandacaru, 1550, Maringá, Paraná 87010-060, Brazil
| | - ALM Ubaldini
- Adriana L M Ubaldini, DDS, MSc, Av Mandacaru, 1550, Maringá, 87.080-000, Brazil
| | - ML Baesso
- Mauro L Baesso, PhD, State University of Maringá, Physics, Av Colombo, 5790, Maringá, 87020900, Brazil
| | - LHC Andrade
- Luis H C Andrade, PhD, State University of Mato Grosso do Sul, Physics, Cidade Universitária de Dourados, Dourados, Mato Grosso do Sul 79804-970, Brazil
| | - SM Lima
- Sandro M Lima, PhD, State University of Mato Grosso do Sul, Physics, Cidade Universitária de Dourados, Dourados, Mato Grosso do Sul 79804-970, Brazil
| | - M Giannini
- Marcelo Giannini, DDS, MSc, PhD, Piracicaba Dental School, University of Campinas, Department of Restorative Dentistry, Av Limeira, 901, Piracicaba, SP 13414-903, Brazil
| | - L Hernandes
- Luzmarina Hernandes, PhD, State University of Maringá, Morphological Sciences Department, Av Colombo, 5790, Maringá, Paraná 87020900, Brazil
| | - RC Pascotto
- Renata C Pascotto, DDS, MSc, PhD, State University of Maringá (UEM), Dentistry, Maringá, PR 87.080-000, Brazil
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Sibin Melo KC, Correia MH, Svidzinski TIE, Hernandes L. Exocellular extract of Fusarium oxysporum, fungus free, is able to permeate and act selectively in skin. APMIS 2018; 126:418-427. [PMID: 29696718 DOI: 10.1111/apm.12835] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2017] [Accepted: 02/21/2018] [Indexed: 11/26/2022]
Abstract
The skin is an important gateway for Fusarium infection in humans. Our hypothesis is that metabolites produced by Fusarium oxysporum should change the barrier structure to permeate the skin. Male Wistar rats received a topical application of a solution (0.05 mg/mL) of Fusarium metabolites. The animals were euthanized 3, 6, 12, 24 h after and the skin was processed for immunostaining by laminin and E-cadherin to investigate whether the Fusarium metabolites can break the barrier of healthy skin. Other techniques were employed: H&E to study the morphology; metalloproteinase-9 (MMP-9), TUNEL, and PCNA immunostaining to evaluate the inflammation, cell death, and proliferation, respectively. There was an inflammatory response mainly centered in the dermis. Qualitatively, the skin of the experimental group showed reduced E-cadherin and laminin immunostaining at 3, 12, and 24 h. Higher intensity staining by TUNEL at 3 h, and PCNA at 6, 12, and 24 h. There was intense MMP-9 activity at 6, 12, and 24 h. None of analyses revealed any changes in the epidermis. It was concluded that the fraction was able to permeate the skin and act selectively in dermis, inducing inflammatory response, increasing MMP-9 immunostaining, inducing apoptosis, and reducing E-cadherin and laminin immunostaining.
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Affiliation(s)
- Katia C Sibin Melo
- Department of Morphological Sciences, Universidade Estadual de Maringá, Maringá, Paraná, Brazil
| | - Marcelo H Correia
- Department of Morphological Sciences, Universidade Estadual de Maringá, Maringá, Paraná, Brazil
| | - Terezinha I E Svidzinski
- Department of Clinical Analysis and Biomedicine, Universidade Estadual de Maringá, Maringá, Paraná, Brazil
| | - Luzmarina Hernandes
- Department of Morphological Sciences, Universidade Estadual de Maringá, Maringá, Paraná, Brazil
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14
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da Silva EM, Mansano ESB, Miazima ES, Rodrigues FAV, Hernandes L, Svidzinski TIE. Radiation used for head and neck cancer increases virulence in Candida tropicalis isolated from a cancer patient. BMC Infect Dis 2017; 17:783. [PMID: 29262785 PMCID: PMC5738833 DOI: 10.1186/s12879-017-2879-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2017] [Accepted: 12/04/2017] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Studies have shown that radiation from radiotherapy increases the yeast colonization of patients. However it is not clear, if such radiation alters the yeast itself. The aim of the present study was therefore to report the direct impact of gamma radiation on Candida tropicalis. METHODS C. tropicalis was obtained from a patient with a carcinoma, a suspension of this yeast containing 2.0 × 103 colony forming units per milliliter was prepared. It was submitted to gamma radiation dosage similar to that used in the treatment of head and neck cancer. After a cumulative dose of 7200 cGy some virulence attributes of C. tropicalis, including macro and micromorphological characteristics, adhesion and biofilm abilities, murine experimental infection and phagocytosis resistance were evaluated on irradiated and non-irradiated yeasts. RESULTS After irradiation the colony morphology of the yeast was altered from a ring format to a smooth appearance in most colonies. Scanning electron microscopy revealed notable differences in the structures of both these colonies and the yeast cells, with the loss of pseudohyphae following irradiation and an increase in extracellular matrix production. The adherence and biofilm production of the yeast was greater following irradiation, both in terms of the number of yeasts and total biomass production on several abiotic surfaces and TR146 cells. The phagocytic index of the irradiated yeasts was not statistically different; however, the presence of cellular debris was detected in the kidneys of infected animals. Mice infected with irradiated yeasts developed an infection at the site of the yeast inoculation, although systemic infection was unchanged. CONCLUSIONS Our findings show for the first time that C. tropicalis, one of the most important yeasts from colonization, which cause fatal candidemia in cancer patients, is affected by gamma irradiation, with changes to its virulence profile.
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Affiliation(s)
- Eliane Martins da Silva
- Department of Medical Mycology, State University of Maringá, Av. Colombo, 5760, C.P, Maringá, PR 87020-900 Brazil
| | | | - Ellen Sayuri Miazima
- Department of Medical Mycology, State University of Maringá, Av. Colombo, 5760, C.P, Maringá, PR 87020-900 Brazil
| | | | - Luzmarina Hernandes
- Department of Histopathology, State University of Maringá, Av. Colombo, 5760, C.P. 87020900, Maringá, Paraná Brazil
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15
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da Silva EM, Kischkel B, Shinobu-Mesquita CS, Bonfim-Mendonça PS, Mansano ES, da Silva MA, Barbosa JF, Fiorini A, Hernandes L, Furlaneto MC, Svidzinski TI. γ-irradiation from radiotherapy improves the virulence potential of Candida tropicalis. Future Microbiol 2017; 12:1467-1486. [PMID: 29110510 DOI: 10.2217/fmb-2017-0137] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
AIM To evaluate if radiation used in radiotherapy can cause changes in the virulence potential of Candida tropicalis ATCC 750. MATERIALS & METHODS C. tropicalis was exposed in vitro to identical dose and scheme of irradiation would be used in patients with head and neck cancer. Some virulence parameters were analyzed before and after irradiation. RESULTS Colony morphologies were irreversibly affected by irradiation. Increase in growth rate, filamentation, adhesion on cell lines and phagocytosis process were also observed. Overall the irradiated C. tropicalis cells became more efficient at causing systemic infection in mice. CONCLUSION γ-radiation induced important changes in C. tropicalis increasing its virulence profile, which could directly affect the relationship between yeasts and hosts.
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Affiliation(s)
- Eliane M da Silva
- Department of Clinical Analysis & Biomedicine/Postgraduate Program in Biosciences & Pathophysiology, Centro de Ciências da Saúde, Universidade Estadual de Maringá, Maringá, Paraná, Avenida Colombo, 5790, Maringá, PR, CEP 87020-900, Brazil
| | - Brenda Kischkel
- Department of Clinical Analysis & Biomedicine/Postgraduate Program in Biosciences & Pathophysiology, Centro de Ciências da Saúde, Universidade Estadual de Maringá, Maringá, Paraná, Avenida Colombo, 5790, Maringá, PR, CEP 87020-900, Brazil
| | - Cristiane S Shinobu-Mesquita
- Department of Clinical Analysis & Biomedicine/Postgraduate Program in Biosciences & Pathophysiology, Centro de Ciências da Saúde, Universidade Estadual de Maringá, Maringá, Paraná, Avenida Colombo, 5790, Maringá, PR, CEP 87020-900, Brazil
| | - Patrícia S Bonfim-Mendonça
- Department of Clinical Analysis & Biomedicine/Postgraduate Program in Biosciences & Pathophysiology, Centro de Ciências da Saúde, Universidade Estadual de Maringá, Maringá, Paraná, Avenida Colombo, 5790, Maringá, PR, CEP 87020-900, Brazil
| | - Elaine Sb Mansano
- Department of Clinical Analysis & Biomedicine/Postgraduate Program in Biosciences & Pathophysiology, Centro de Ciências da Saúde, Universidade Estadual de Maringá, Maringá, Paraná, Avenida Colombo, 5790, Maringá, PR, CEP 87020-900, Brazil
| | | | | | - Adriana Fiorini
- Department of Microbiology, Universidade Federal do Paraná, Setor Palotina, Paraná, Brazil
| | - Luzmarina Hernandes
- Department of Clinical Analysis & Biomedicine/Postgraduate Program in Biosciences & Pathophysiology, Centro de Ciências da Saúde, Universidade Estadual de Maringá, Maringá, Paraná, Avenida Colombo, 5790, Maringá, PR, CEP 87020-900, Brazil
| | - Marcia C Furlaneto
- Department of Microbiology, Universidade Estadual de Londrina, Londrina, Paraná, Brazil
| | - Terezinha Ie Svidzinski
- Department of Clinical Analysis & Biomedicine/Postgraduate Program in Biosciences & Pathophysiology, Centro de Ciências da Saúde, Universidade Estadual de Maringá, Maringá, Paraná, Avenida Colombo, 5790, Maringá, PR, CEP 87020-900, Brazil
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16
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Mansano ESB, de Morais GR, Moratto EM, Sato F, Baesso ML, Medina AN, Svidzinski TIE, Hernandes L. Combination of Histopathology and FT-Raman Spectroscopy for the Study of Experimental Paracoccidioidomycosis in the Spleen. Photochem Photobiol 2017; 94:88-94. [DOI: 10.1111/php.12840] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2017] [Accepted: 09/01/2017] [Indexed: 11/29/2022]
Affiliation(s)
| | | | | | - Francielle Sato
- Department of Physics; Universidade Estadual de Maringá; Maringá Paraná Brasil
| | | | - Antonio Neto Medina
- Department of Physics; Universidade Estadual de Maringá; Maringá Paraná Brasil
| | | | - Luzmarina Hernandes
- Department of Morphological Sciences; Universidade Estadual de Maringá; Maringá Paraná Brasil
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17
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Besson JCF, Hernandes L, Campos JMD, Morikawa KA, Bersani-Amado CA, Matioli G. Insulin complexed with cyclodextrins stimulates epithelialization and neovascularization of skin wound healing in rats. Injury 2017; 48:2417-2425. [PMID: 28888719 DOI: 10.1016/j.injury.2017.08.046] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/05/2016] [Accepted: 08/21/2017] [Indexed: 02/02/2023]
Abstract
INTRODUCTION Skin lesions are a significant public health problem, above all that wounds fail to heal properly and become chronic. Due to its reepithelization action, insulin has the potential to heal skin lesions, by stimulating the proliferation and migration of keratinocytes, angiogenic stimulus, and increasing collagen deposition. In the present study insulin was complexed with 2-hydroxypropyl-β-cyclodextrin (HPβCD) and its wound healing effect and inclusion complex (HPβCD-I) were evaluated in excisional wounds in the skin of rats. MATERIAL AND METHODS Three different gel based pharmaceutical forms were created: carbopol 940® base gel, an insulin gel comprising the base gel plus 50 IU of insulin and a gel complex comprising the base gel plus (HPβCD) complexed with insulin (HPβCD-I) were used to verify wound healing in vitro and in vivo assays. RESULTS The wounds in the skin of rats were treated with gel containing HPβCD-I not cytoxically irritating and cytotoxic. Analysis of cell proliferation and measurement of the length and thickness of the epidermis showed that HPβCD-I prolonged the proliferation and migration of keratinocytes. Revascularization analysis of lesions treated with HPβCD-I compared to those treated with insulin found that angiogenic stimulus was less intense, but more constant and prolonged in the modified release process. There was increased deposition of type I and III collagen fibers in accordance with the treatment time. CONCLUSION Therefore, the slow release of complexed insulin modulated the reepithelialization process by stimulating cell proliferation and migration of keratinocytes, favoring greater concentration of serum insulin, modulating inflammatory response, matrix remodeling and promoting neovascularization. Angiogenesis extended by the steady release of insulin can be effective in the treatment of chronic wounds.
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Affiliation(s)
- Jean Carlos Fernando Besson
- Department of Morphologic Sciences, State University of Maringá, Av. Colombo, 5790-87020-900 Maringá, PR, Brazil
| | - Luzmarina Hernandes
- Department of Morphologic Sciences, State University of Maringá, Av. Colombo, 5790-87020-900 Maringá, PR, Brazil
| | - Jéssica Men de Campos
- Department of Morphologic Sciences, State University of Maringá, Av. Colombo, 5790-87020-900 Maringá, PR, Brazil
| | - Karina Amélia Morikawa
- Department of Morphologic Sciences, State University of Maringá, Av. Colombo, 5790-87020-900 Maringá, PR, Brazil
| | - Ciomar Aparecida Bersani-Amado
- Department of Pharmacology and Therapeutics, State University of Maringá, Av. Colombo, 5790-87020-900 Maringá, PR, Brazil
| | - Graciette Matioli
- Department of Pharmacy, State University of Maringá, Av. Colombo, 5790-87020-900 Maringá, PR, Brazil.
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Falkowski-Temporini GJ, Lopes CR, Massini PF, Brustolin CF, Ferraz FN, Sandri PF, Hernandes L, Aleixo DL, Barion TF, Esper LG, de Araújo SM. Increased of the hepatocytes and splenocytes apoptosis accompanies clinical improvement and higher survival in mice infected with Trypanosoma cruzi and treated with highly diluted Lycopodium clavatum. Microb Pathog 2017. [DOI: 10.1016/j.micpath.2017.06.027] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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Ritter AMV, Hernandes L, da Rocha BA, Estevão-Silva CF, Wisniewski-Rebecca ES, Cezar JDS, Caparroz-Assef SM, Cuman RKN, Bersani-Amado CA. Anethole reduces inflammation and joint damage in rats with adjuvant-induced arthritis. Inflamm Res 2017; 66:725-737. [DOI: 10.1007/s00011-017-1053-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2017] [Revised: 04/18/2017] [Accepted: 05/03/2017] [Indexed: 01/13/2023] Open
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Haddad PT, Salazar M, Hernandes L. Histomorphometry of the organic matrix of the femur in ovariectomized rats treated with sodium alendronate. Rev Bras Ortop 2015; 50:100-4. [PMID: 26229885 PMCID: PMC4519618 DOI: 10.1016/j.rboe.2014.12.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2013] [Accepted: 01/05/2014] [Indexed: 11/29/2022] Open
Abstract
Objective To evaluate the effect of two different concentrations of sodium alendronate on the quantity of organic matrix in the femur of rats with estrogen suppression caused by ovariectomy. Methods Sixty-days-old Wistar rats (Rattus norvegicus) were subjected to bilateral laparotomy to remove the ovaries. The animals were divided into a control group, in which they only underwent laparotomy; an ovariectomized group (OVX); an ovariectomized group treated with 1 mg/kg of alendronate (OVX 1 mg); and an ovariectomized group treated with 2 mg/kg of alendronate (OVX 2 mg). The rats received alendronate twice a week for 90 days. The left femur was then removed, fixed and processed for embedding in paraffin. Semi-serial sections stained with hematoxylin and eosin were used to determine the area occupied by organic bone matrix, by means of image analysis software. The animals’ weights were obtained at the beginning and end of the experiment. Results The ovariectomized animals and those treated with 1 mg/kg of alendronate presented significant increases in body weight (p < 0.05), in comparison with the control group. Histomorphometric analysis revealed that in the animals treated with 2 mg/kg of alendronate, the area (μm2) occupied by organic matrix (1,81,900 ± 18,130) was similar (p > 0.05) to that of the non-ovariectomized control animals (2,04,800 ± 9590), which indicates that this medication had a preventive effect with regard to bone mass loss. Conclusion The higher concentration of the medication, administered twice a week for 90 days, was more effective than the dose of 1 mg/kg over the same period.
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Affiliation(s)
| | - Márcio Salazar
- State University of Maringá (UEM), Maringá, Paraná, Brazil
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Sbeghen MR, Voltarelli EM, Campois TG, Kimura E, Aristides SMA, Hernandes L, Caetano W, Hioka N, Lonardoni MVC, Silveira TGV. Topical and Intradermal Efficacy of Photodynamic Therapy with Methylene Blue and Light-Emitting Diode in the Treatment of Cutaneous Leishmaniasis Caused by Leishmania braziliensis. J Lasers Med Sci 2015; 6:106-11. [PMID: 26464777 DOI: 10.15171/jlms.2015.03] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
INTRODUCTION The topical and intradermal photodynamic therapy (PDT) effect of methylene blue (MB) using light-emitting diode (LED) as light source (MB/LED-PDT) in the treatment of lesions of American cutaneous leishmaniasis (ACL) caused by Leishmania braziliensis in hamsters were investigated. METHODS Hamsters were infected in the footpad with 4×10(7) promastigotes of L. braziliensis and divided in 4 groups: Control group was not treated, AmB group was treated with amphotericin B, MB-Id group received intradermal MB at the edge of the lesion and MB-Tp group received MB topic. After treatment with MB, the animals were illuminated using red LEDs at the 655 nm wavelength for 1 hour. The MB/LED-PDT was carried out three times a week for 12 weeks. RESULTS Animals of MB-Tp group presented lesion healing with significant diminution in extent of the lesion, and reduced parasite burden compared to control group; however, no significant difference was seen compared to the AmB group. MB-Tp group also showed reconstitution of the epithelium, the formation of collagen fibers, organization in the epidermis, a little disorganization and inflammation in the dermis. MB-Id was ineffective in all parameters evaluated, and it was comparable to the control group results. CONCLUSION These data show that PDT with the use of MB-Tp and LED may be an alternative for the treatment of ACL. However, additional studies are being conducted to assess the potential of MB/LED-PDT, alone or in combination with conventional therapy, for the treatment of ACL.
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Affiliation(s)
| | | | | | - Elza Kimura
- Departament of Pharmacy, Universidade Estadual de Maringá, Maringá, Paraná, Brazil
| | | | - Luzmarina Hernandes
- Department of Morphophysiology Sciences, Universidade Estadual de Maringá, Maringá, Paraná, Brazil
| | - Wilker Caetano
- Department of Chemistry, Universidade Estadual de Maringá, Maringá, Paraná, Brazil
| | - Noboru Hioka
- Department of Chemistry, Universidade Estadual de Maringá, Maringá, Paraná, Brazil
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Tunin LM, Borghi FB, Nogueira AC, Higachi L, Barbosa DS, Baesso ML, Hernandes L, Diniz A, Truiti MDCT. Employing photoacoustic spectroscopy in the evaluation of the skin permeation profile of emulsion containing antioxidant phenolic-rich extract of Melochia arenosa. Pharm Biol 2015; 54:139-145. [PMID: 25857682 DOI: 10.3109/13880209.2015.1021817] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
CONTEXT Oxidative stress is an important factor modulating skin alterations. Melochia arenosa Benth. (Malvaceae) is a Brazilian plant with antimicrobial activity and antioxidant potential. OBJECTIVE The objective of this study is to develop a topical formulation containing antioxidant phenolic-rich extract of M. arenosa and to evaluate its skin permeation profile. MATERIALS AND METHODS Response surface methodology was used to maximize the total phenolic (TP) content of the extract and its antioxidant activity was evaluated by 2,2-diphenyl-1-picryl-hydrazyl (DPPH), 2,2'-azinobis (3-ethylbenzothiazoline-6-sulfonic acid) (ABTS), and respiratory burst methods. An emulsion containing 1% optimized extract (OE) was developed and employed photoacoustic spectroscopy (PAS) for the determination of its skin permeation profile. The morphology of the skin was studied in histological sections stained with hematoxylin-eosin. RESULTS AND DISCUSSION The optimum conditions predicted for the major extractive efficiency of the phenolics with 100% ethanol led extraction time 101 h and plant:solvent proportion 1:13.5 (w/v). OE presented TP = 724.6 ± 8.2 mg GAE/g extract and scavenging capacity of DPPH (IC50 value = 11.43 ± 0.14 µg/mL) and ABTS radicals (IC50 value = 35.42 ± 0.48 µg/mL). The production of ROS by neutrophils after stimulation with phorbol miristate acetate was lower when the OE was present in the reaction medium, endorsing its high antioxidant capacity. The data obtained by PAS indicated that the OE present in the emulsion has permeated and was distributed in the whole skin. No histopathological alterations were observed in the histological analysis. CONCLUSION The formulation developed is a promising tool for skin care and could prevent the damage caused by oxidative stress.
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Affiliation(s)
| | | | - Ana Claudia Nogueira
- b Departamento de Física , Universidade Estadual de Maringá , Maringá PR , Brazil
| | - Luciana Higachi
- c Departamento de Patologia, Análises Clínicas e Toxicológicas , Universidade Estadual de Londrina , Londrina PR , Brazil , and
| | - Décio Sabbatini Barbosa
- c Departamento de Patologia, Análises Clínicas e Toxicológicas , Universidade Estadual de Londrina , Londrina PR , Brazil , and
| | - Mauro Luciano Baesso
- b Departamento de Física , Universidade Estadual de Maringá , Maringá PR , Brazil
| | - Luzmarina Hernandes
- d Departamento de Ciências Morfológicas , Universidade Estadual de Maringá , Maringá PR , Brazil
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Pavan NNO, Endo MS, Bruder MV, Pavan AJ, Grossmann E, Hernandes L, Cuman RKN. Periapical tissue repair of dog teeth after intracanal administration of capsaicin 0.075%. BDS 2015. [DOI: 10.14295/bds.2015.v18i1.1070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Objective: The aim of this study was make a descriptively evaluate the repair of the periapical region of dog teeth. Material and Methods: Thirty-six root canals were used,eighteen were filled with 0.075% capsaicin and calcium hydroxide (test paste)and the rest eighteen root canals were filled with calcium hydroxide (control group). Histological analyzes were performed to classify inflammation as absent, mild, moderate or severe. The analyses also classified the presence or absence of repairat 7, 14 and 30 days.Results: The use of 0.075% capsaicin did not modify the inflammatory response and repairwhen compared to control group. Conclusion: Our data suggests that test group with 0.075% capsaicin as intracanal administration could be indicated for tissue repair; furthermore other experiments should be carried out to evaluate possible clinical use of capsaicin for atypical odontalgia.Keywords: Capsaicin; Repair; Inflammation; Periapical tissue.
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Bulla MK, Hernandes L, Baesso ML, Nogueira AC, Bento AC, Bortoluzzi BB, Serra LZ, Cortez DAG. Evaluation of Photoprotective Potential and Percutaneous Penetration by Photoacoustic Spectroscopy of theSchinus terebinthifoliusRaddi Extract. Photochem Photobiol 2015; 91:558-66. [DOI: 10.1111/php.12419] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2014] [Accepted: 01/07/2015] [Indexed: 02/05/2023]
Affiliation(s)
- Milena K. Bulla
- Program of Post-Graduation in Pharmaceutical Sciences; Universidade Estadual de Maringá; Maringá PR Brazil
| | - Luzmarina Hernandes
- Department of Morphological Sciences; Universidade Estadual de Maringá; Maringá PR Brazil
| | - Mauro L. Baesso
- Department of Physics; Universidade Estadual de Maringá; Maringá PR Brazil
| | - Ana C. Nogueira
- Department of Physics; Universidade Estadual de Maringá; Maringá PR Brazil
| | - Antonio C. Bento
- Department of Physics; Universidade Estadual de Maringá; Maringá PR Brazil
| | | | - Lara Z. Serra
- Program of Post-Graduation in Pharmaceutical Sciences; Universidade Estadual de Maringá; Maringá PR Brazil
| | - Diogenes A. G. Cortez
- Program of Post-Graduation in Pharmaceutical Sciences; Universidade Estadual de Maringá; Maringá PR Brazil
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Haddad PT, Salazar M, Hernandes L. Histomorfometria da matriz orgânica do fêmur de ratas ovariectomizadas tratadas com alendronato de sódio. Rev Bras Ortop 2015. [DOI: 10.1016/j.rbo.2014.01.021] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Mansano ESB, de Morais GR, Moratto EM, Sato F, Medina Neto A, Svidzinski TIE, Baesso ML, Hernandes L. Correlation between histopathological and FT-Raman spectroscopy analysis of the liver of Swiss mice infected with Paracoccidioides brasiliensis. PLoS One 2014; 9:e106256. [PMID: 25181524 PMCID: PMC4152158 DOI: 10.1371/journal.pone.0106256] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2014] [Accepted: 08/01/2014] [Indexed: 11/21/2022] Open
Abstract
Paracoccidioidomycosis is the most important systemic mycosis in Latin America. The main entrance of the fungus is the airway. It primarily occurs in the lung, but in its disseminated form may affect any organ. The liver is one of the organs afflicted by this disease and its homeostasis may be impaired. The aim of the present study was to evaluate the evolution of paracoccidioidomycosis in the liver of Swiss mice and correlate morphological factors with the expression of gp43 and with physicochemical analysis via FT-Raman of the infected organ. According to colony forming unit (CFU) and granuloma counting, the first and second weeks were the periods when infection was most severe. Tissue response was characterized by the development of organized granulomas and widespread infection, with yeasts located within the macrophages and isolated hepatocytes. The gp43 molecule was distributed throughout the hepatic parenchyma, and immunostaining was constant in all observed periods. The main physicochemical changes of the infected liver were observed in the spectral ranges between 1700-1530 cm(-1) and 1370-1290 cm(-1), a peak shifting center attributed to phenylalanine and area variation of -CH2 and -CH3 compounds associated to collagen, respectively. Over time, there was a direct proportional relationship between the number of CFUs, the number of granulomas and the physicochemical changes in the liver of mice infected with Paracoccidioides brasiliensis. The expression of gp43 was similar in all observed periods.
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Affiliation(s)
| | | | | | - Francielle Sato
- Department of Physics, Universidade Estadual de Maringá, Maringá, Paraná, Brazil
| | - Antonio Medina Neto
- Department of Physics, Universidade Estadual de Maringá, Maringá, Paraná, Brazil
| | | | - Mauro Luciano Baesso
- Department of Physics, Universidade Estadual de Maringá, Maringá, Paraná, Brazil
| | - Luzmarina Hernandes
- Department of Morphological Sciences, Universidade Estadual de Maringá, Maringá, Paraná, Brazil
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Barrio MC, Del Río A, Murillo J, Maldonado E, López-Gordillo Y, Paradas-Lara I, Hernandes L, Catón J, Martínez-Álvarez C. Epidermal growth factor impairs palatal shelf adhesion and fusion in the Tgf-β 3 null mutant. Cells Tissues Organs 2014; 199:201-11. [PMID: 24861080 DOI: 10.1159/000362227] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/14/2014] [Indexed: 11/19/2022] Open
Abstract
The cleft palate presented by transforming growth factor-β3 (Tgf-β3) null mutant mice is caused by altered palatal shelf adhesion, cell proliferation, epithelial-to-mesenchymal transformation and cell death. The expression of epidermal growth factor (EGF), transforming growth factor-β1 (Tgf-β1) and muscle segment homeobox-1 (Msx-1) is modified in the palates of these knockout mice, and the cell proliferation defect is caused by the change in EGF expression. In this study, we aimed to determine whether this change in EGF expression has any effect on the other mechanisms altered in Tgf-β3 knockout mouse palates. We tested the effect of inhibiting EGF activity in vitro in the knockout palates via the addition of Tyrphostin AG 1478. We also investigated possible interactions between EGF, Tgf-β1 and Msx-1 in Tgf-β3 null mouse palate cultures. The results show that the inhibition of EGF activity in Tgf-β3 null mouse palate cultures improves palatal shelf adhesion and fusion, with a particular effect on cell death, and restores the normal distribution pattern of Msx-1 in the palatal mesenchyme. Inhibition of TGF-β1 does not affect either EGF or Msx-1 expression.
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Affiliation(s)
- M Carmen Barrio
- Departamento de Anatomía y Embriología Humana I, Facultad de Medicina, Universidad Complutense de Madrid, Madrid, Spain
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Gonçalves CCM, Hernandes L, Bersani-Amado CA, Franco SL, Silva JFDS, Natali MRM. Use of propolis hydroalcoholic extract to treat colitis experimentally induced in rats by 2,4,6-trinitrobenzenesulfonic Acid. Evid Based Complement Alternat Med 2013; 2013:853976. [PMID: 24101941 PMCID: PMC3786476 DOI: 10.1155/2013/853976] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/09/2013] [Revised: 07/25/2013] [Accepted: 08/01/2013] [Indexed: 01/20/2023]
Abstract
This study focused on the therapeutic effect of a propolis SLNC 106 (PI) extract on experimental colitis. Wistar adult rats received 0.8 mL rectal dose of one of the following solutions: saline (group S), 20 mg TNBS in 50% ethanol (group TNBS), 20 mg TNBS in 50% ethanol and propolis extract in saline (group TNBS-P), propolis extract in saline (group SP), and 20 mg TNBS in 50% ethanol and 50 mg/kg mesalazine (group TNBS-M). The animals were euthanized 7 or 14 days after the colitis induction. Samples of the distal colon were harvested for the analysis of myeloperoxidase (MPO) enzyme activity and for morphometric analysis in paraffin-embedded histological sections with hematoxylin-eosin or histochemical staining. The animals treated with TNBS exhibited the typical clinical signs of colitis. Increased MPO activity confirmed the presence of inflammation. TNBS induced the development of megacolon, ulceration, transmural inflammatory infiltrate, and thickened bowel walls. Treatment with propolis moderately reduced the inflammatory response, decreased the number of cysts and abscesses, inhibited epithelial proliferation, and increased the number of goblet cells. The anti-inflammatory activity of the propolis SLNC 106 extract was confirmed by the reductions in both the inflammatory infiltrate and the number of cysts and abscesses in the colon mucosa.
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Affiliation(s)
- Cely Cristina Martins Gonçalves
- Laboratory of Animal Histology, Department of Morphological Sciences, State University of Maringá, 87020-900 Maringá, PR, Brazil
| | - Luzmarina Hernandes
- Laboratory of Animal Histology, Department of Morphological Sciences, State University of Maringá, 87020-900 Maringá, PR, Brazil
| | - Ciomar Aparecida Bersani-Amado
- Laboratory of Inflammation, Department of Pharmacology and Therapeutics, State University of Maringá, 87020-900 Maringá, PR, Brazil
| | - Selma Lucy Franco
- Laboratory of Phytotherapy and Apitherapy Development, Department of Pharmacy, State University of Maringá, 87020-900 Maringá, PR, Brazil
| | - Joaquim Felipe de Souza Silva
- Laboratory of Animal Histology, Department of Morphological Sciences, State University of Maringá, 87020-900 Maringá, PR, Brazil
| | - Maria Raquel Marçal Natali
- Laboratory of Animal Histology, Department of Morphological Sciences, State University of Maringá, 87020-900 Maringá, PR, Brazil
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de Paulo LF, Coelho AC, Svidzinski TIE, Sato F, Rohling JH, Natali MRM, Baesso ML, Hernandes L. Crude extract of Fusarium oxysporum induces apoptosis and structural alterations in the skin of healthy rats. J Biomed Opt 2013; 18:095004. [PMID: 24077666 DOI: 10.1117/1.jbo.18.9.095004] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2013] [Accepted: 08/22/2013] [Indexed: 06/02/2023]
Abstract
We evaluate the biological and physicochemical effects of a Fusarium oxysporum crude extract (CE) on the skin of healthy rats. The CE is topically applied and subsequently the skin is collected after 3, 6, 12, and 24 h. The samples are analyzed by Fourier transform infrared photoacoustic spectroscopy (FTIR-PAS) and histomorphometric analysis. Terminal dUTP nick end labeling (TUNEL assay) is performed to detect both the cells in apoptosis and proliferation. There is a thickening of the epidermis after 6, 12, and 24 h and dermis after 12 and 24 h of CE application. A reduction of the dermis thickness is observed at 3 and 6 h. The treated skin shows higher labeling intensity by TUNEL at 3 h, while a higher intensity by proliferating cell nuclear antigen occurs at 3 and 12 h. FTIR-PAS data support the histology observations showing an increase in the absorption peaks in the dermis after the application of the CE. F. oxysporum CE permeated through the epidermis and the dermis, reaching the subcutaneous tissue, inducing cell apoptosis, and causing physicochemical changes in the organic molecules located in the dermis. This is the first known study associating histopathological and physical chemistry changes on healthy skin after the application of F. oxysporum CE.
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Affiliation(s)
- Luis F de Paulo
- Universidade Estadual de Maringá, Departamento de Ciências Morfológicas, Avenue Colombo 5790, Maringá, Paraná, Brazil
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De Moraes SMF, Brogio TA, Zanoni JN, Zapater MCVU, Peres SB, Hernandes L. Creatine supplementation in trained rats causes changes in myenteric neurons and intestinal wall morphometry. BIOCELL 2013; 37:37-43. [PMID: 24392580] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Creatine is widely used by athletes as an ergogenic resource. The aim of this study was to evaluate the influence of creatine supplementation on the duodenum of rats submitted to physical training. The number and myenteric neuronal cell bodies as well mucosal and muscular tunic morphometry were evaluated. Control animals received a standard chow for 8 weeks, and the treated ones received the standard chow for 4 weeks and were later fed with the same chow but added with 2% creatine. Animals were divided in groups: sedentary, sedentary supplemented with creatine, trained and trained supplemented with creatine. The training consisted in treadmill running for 8 weeks. Duodenal samples were either processed for whole mount preparations or for paraffin embedding and hematoxylin-eosin staining for histological and morphometric studies of the mucosa, the muscular tunic and myenteric neurons. It was observed that neither creatine nor physical training alone promoted alterations in muscular tunic thickness, villus height or crypts depth, however, a reduction in these parameters was observed when both were associated. The number of myenteric neurons was unchanged, but the neuronal cell body area was reduced in trained animals but not when training and creatine was associated, suggesting a neuroprotector role of this substance.
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Affiliation(s)
| | - Thais Andréia Brogio
- Universidade Estadual de Maringá, Avenida Colombo 5790, Bloco H79, sala 108 Maringá, Paraná 87020 900, Brazil
| | - Jacqueline Nelisis Zanoni
- Universidade Estadual de Maringá, Avenida Colombo 5790, Bloco H79, sala 108 Maringá, Paraná 87020 900, Brazil
| | | | - Sidney Barnabé Peres
- Universidade Estadual de Maringá, Avenida Colombo 5790, Bloco H79, sala 108 Maringá, Paraná 87020 900, Brazil
| | - Luzmarina Hernandes
- Universidade Estadual de Maringá, Avenida Colombo 5790, Bloco H79, sala 108 Maringá, Paraná 87020 900, Brazil
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Morato EM, Morais GR, Sato F, Medina AN, Svidzinski TIE, Baesso ML, Hernandes L. Morphological and Structural Changes in Lung Tissue Infected byParacoccidioides brasiliensis: FTIR Photoacoustic Spectroscopy and Histological Analysis. Photochem Photobiol 2013; 89:1170-5. [DOI: 10.1111/php.12110] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2013] [Accepted: 06/03/2013] [Indexed: 01/22/2023]
Affiliation(s)
- Edilaine M. Morato
- Department of Morphological Science; Universidade Estadual de Maringá; Maringá; PR; Brazil
| | - Gutierrez R. Morais
- Department of Physics; Universidade Estadual de Maringá; Maringá; PR; Brazil
| | - Francielle Sato
- Department of Physics; Universidade Estadual de Maringá; Maringá; PR; Brazil
| | - Antonio N. Medina
- Department of Physics; Universidade Estadual de Maringá; Maringá; PR; Brazil
| | | | - Mauro L. Baesso
- Department of Physics; Universidade Estadual de Maringá; Maringá; PR; Brazil
| | - Luzmarina Hernandes
- Department of Morphological Science; Universidade Estadual de Maringá; Maringá; PR; Brazil
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Murakami AE, Fernandes JIM, Hernandes L, Santos TC. Effects of starter diet supplementation with arginine on broiler production performance and on small intestine morphometry. Pesq Vet Bras 2012. [DOI: 10.1590/s0100-736x2012000300014] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The effects of starter diet (days 1 to 21) supplemented with arginine (Arg) on the production performance and duodenum and jejunum mucosa morphometry of broilers were studied. Male Cobb broiler chickens (990) were randomly assigned to one of five treatments in a complete random design. Measurements of 33 chicks per treatment were made in six repetitions. The treatments consisted of a basal diet with 1.390% digestible Arg (no supplementation) and four dietary levels (1.490%, 1.590%, 1.690%, and 1.790%), providing a relationship with lysine of 1.103; 1.183; 1.262; 1.341 and 1.421%, respectively. From the age of 22 days on, all birds received conventional grower diet. The data were submitted to regression analysis by polynomial decomposition of the degrees of freedom in relation to the levels of Arg. The Arg supplementation increased (P<0.05) the live weight and the feed conversion ratio without increasing the feed intake of the birds. However, no effect was observed (P>0.05) in the growth phase (days 22 to 42) in the absence of the Arg supplementation. The supplementation of Arg over of NRC recommendation during the starter phase may be necessary for the expression of the maximal weight gain potential in birds. No effect (P<0.05) of Arg dietary supplementation was observed either on small intestine weight and length at any age. However, the duodenum villus:crypt ratio increased and the crypt depth decreased in the first week in response to increasing dietary Arg. It is concluded that broiler Arg dietary supplementation in the starter diet improved production performance and small intestine morphometry, especially in the first week.
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Hernandes L, Ramos AL, Micheletti KR, Santi AP, Cuoghi OA, Salazar M. Densitometry, radiography, and histological assessment of collagen as methods to evaluate femoral bones in an experimental model of osteoporosis. Osteoporos Int 2012; 23:467-73. [PMID: 21308364 DOI: 10.1007/s00198-011-1539-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/04/2010] [Accepted: 01/04/2011] [Indexed: 11/21/2022]
Abstract
SUMMARY All methods to detect experimental loss of bone present technique limitations. The sensitivities of image and histological analyses to detect the effects of teriparatide in rats with bone loss after ovariectomy were evaluated. All methods were qualitatively valid. INTRODUCTION The standardization of methods to assess bone loss after ovariectomy is crucial to establish the degree of experimental osteoporosis. In general, methods per image or histological techniques are used. To validate these two ways to determine the degree of bone loss in ovariectomized rats, we evaluated the sensitivities of bone densitometry, conventional radiography, and histological analysis of the area occupied by collagen, detecting the effects of teriparatide treatment in the femur of ovariectomized rats with bone loss. METHODS Wistar rats were divided into three groups: a control group, in which the animals were only subjected to laparotomy; an ovariectomized group, in which bilateral removal of the ovaries was performed; and an ovariectomized + teriparatide group, in which bilateral removal of the ovaries was performed, and the animals were treated with 3 μg/100 g/day of teriparatide. Three months following the ovariectomy, bone densitometry, radiographic densitometry, and histological analysis of the area occupied by collagen fibers were carried out in the femur diaphysis. RESULTS The bone densitometry revealed 11.2% reduction in femur density; in the conventional radiography, the loss of bone mass was 14.5%, and with the histological analysis, a 40.9% reduction in the area occupied by collagen was detected in the femur diaphysis. CONCLUSIONS In conclusion, histological analysis could not be quantitatively compared with the methods of bone densitometry and conventional radiography; however, all of these methods were qualitatively valid for assessing the loss of bone stemming from ovariectomy and the therapeutic effect of teriparatide in the prevention of osteoporosis.
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Affiliation(s)
- L Hernandes
- Departamento de Ciências Morfológicas, Universidade Estadual de Maringá, Paraná, Bloco H79 sala 108, Avenida Colombo, 5790, zip code 87020 900, Maringá, Paraná, Brazil.
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Hernandes L, Marangon AV, Salci T, Svidzinski TIE. Toxic thermoresistant metabolites of Fusarium oxysporum are capable of inducing histopathological alterations in Wistar rats. J Venom Anim Toxins Incl Trop Dis 2012. [DOI: 10.1590/s1678-91992012000200003] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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Moreschi E, Hernandes L, Dantas JA, da Silva MARCP, Casaroto AR, Bersani-Amado CA. Effect of dolomite on the repair of bone defects in rats: histological study. Histol Histopathol 2010; 25:1547-56. [PMID: 20886435 DOI: 10.14670/hh-25.1547] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The aim of the present study was to evaluate histologically and radiographically the tissue response to dolomite [CaMg(CO3)2] and its osteogenic potential in the repair of bone cavities in the calvaria of rats. A bone defect 10 mm in diameter and 1 mm deep was made in the calvaria of male Wistar rats. The defects were filled with dolomite, inorganic bovine bone (positive control), or coagulum (negative control). The animals were euthanized 7, 15, 30, and 60 days after surgery, and specimens were collected for radiographic and microscopic analyses. The bone defects were processed for paraffin embedding and H&E staining. The histological study revealed that dolomite stimulated a moderate inflammatory response, with programmed cell death in the first 15 days, compared to bovine bone which showed a moderate to intense acute response. In the chronic phase, the inflammatory response was characterized by the occurrence of macrophages organized as epithelioid cells in the dolomite group, and giant cells in the bovine-bone group. Fibrosis developed in all three groups; however, encapsulation of the fragments, reabsorption, and osteoconductive activity occurred only in the defects filled with bovine bone. The radiographic analysis showed that the bovine bone was most efficient in the repair of the defects, followed by the dolomite and the coagulum. This study demonstrated that the dolomite stimulated a moderate acute inflammatory response with programmed cell death, and a chronic inflammatory response by means of the phagocytic mononuclear system. Although osteo-conductive activity was not shown, the dolomite favored the repair process, compared to the coagulum group.
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Affiliation(s)
- Eduardo Moreschi
- Department of Pharmacy and Pharmacology, Inflammation Laboratory, University of Maringá, Maringá-PR, Brazil
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Hernandes L, Pereira LMDS, Palazzo F, Mello JCPD. Wound-healing evaluation of ointment from Stryphnodendron adstringens (barbatimão) in rat skin. BRAZ J PHARM SCI 2010. [DOI: 10.1590/s1984-82502010000300005] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
This study evaluated the cicatrizant effect of an ointment containing 1% of the ethyl-acetate fraction extracted from the stem bark of "barbatimão" (Stryphnodendron adstringens), in wounds made in the skin of rats, after 4, 7 and 10 days of treatment. Control wounds were treated with a base ointment without extract. The proliferation of keratinocytes in the area of reepithelialization was evaluated by counting the number of epithelial cells that were blocked in metaphase by vincristine sulfate. The length of the reepithelialized margin and the contraction of the wound were measured. Topical application of the "barbatimão" ointment stimulated proliferation of the keratinocytes, but had no effect on the length of the epithelium or on the contraction of the wounds.
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Marangon AV, Svidzinski TIE, Salci TP, Meurer R, da Cruz Fernandes M, Hernandes L. Metabolic extract ofFusarium oxysporuminduces histopathologic alterations and apoptosis in the skin of Wistar rats. Int J Dermatol 2009; 48:697-703. [DOI: 10.1111/j.1365-4632.2009.04013.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Da Silva FC, Patussi EV, Hernandes L, De Oliveira Dalalio MM, Svidzinski TIE, Cardoso CP. Morphologic Organization of Pulmonary Granulomas in Mice Infected with Paracoccidioides brasiliensis. Am J Trop Med Hyg 2009. [DOI: 10.4269/ajtmh.2009.80.798] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Da Silva FC, Svidzinski TIE, Patussi EV, Cardoso CP, De Oliveira Dalalio MM, Hernandes L. Morphologic organization of pulmonary granulomas in mice infected with Paracoccidioides brasiliensis. Am J Trop Med Hyg 2009; 80:798-804. [PMID: 19407127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/27/2023] Open
Abstract
A morphologic study of the lungs was carried out in Swiss mice infected with yeast isolated from Paracoccidioides brasiliensis (Pb18). The lung was processed 1, 2, 4, and 8 weeks after inoculation for histologic staining with hematoxylin and eosin (H&E), methenamine silver nitrate (Gomori-Grocott), and picrosirius to qualitative and quantitative analyses of the granulomas and the presence of fungal lesions. The numbers of CFUs/g counted in the lungs were 189.8 +/- 20.64, 353.6 +/- 46.21, 547.2 +/- 108.1, and 295.2 +/- 89.17 in the first, second, fourth, and eighth weeks, respectively. One week after infection, inflammatory cells and reticular and collagens fibers, the latest typical of fibrosis, were detected. After 2 and 4 weeks, a progressive intensification of the infection and fibrosis was observed, but in week 8 a more organized granuloma was evident, with macrophages, epithelioid cells, and yeasts in the central portion, and intense peripheral basophilia. Pycnotic structures typical of apoptotic bodies were observed in weeks 1 and 8. The different histologic staining used acted as a fundamental tool for the study of the morphologic organization of granuloma formation.
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Affiliation(s)
- Fernanda C Da Silva
- Post-graduate Program in Clinical Analyses, Laboratory of Medical Mycology, Universidade Estadual de Maringá, Maringá, Paraná, Brazil.
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Sehn E, Hernandes L, Franco S, Gonçalves C, Baesso M. Dynamics of reepithelialisation and penetration rate of a bee propolis formulation during cutaneous wounds healing. Anal Chim Acta 2009; 635:115-20. [DOI: 10.1016/j.aca.2009.01.019] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2008] [Revised: 01/08/2009] [Accepted: 01/12/2009] [Indexed: 10/21/2022]
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Moreschi D, Fagundes DJ, Hernandes L, Haapalainen EF. Effects of Prostaglandin E1 in the Genesis of Blood Capillaries in the Ischemic Skeletal Muscle of Rats: Ultrastructural Analysis. Ann Vasc Surg 2008; 22:121-6. [DOI: 10.1016/j.avsg.2007.07.035] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2007] [Revised: 06/11/2007] [Accepted: 07/16/2007] [Indexed: 10/21/2022]
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Moreschi Jr. D, Fagundes DJ, Amado LEB, Hernandes L, Moreschi HK. Efeitos da prostaglandina E1 (PGE1) na gênese de capilares sanguíneos em músculo esquelético isquêmico de ratos: estudo histológico. J Vasc Bras 2007. [DOI: 10.1590/s1677-54492007000400004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
CONTEXTO: A angiogênese terapêutica é uma modalidade de tratamento para pacientes com insuficiência arterial crônica que não têm indicação para revascularização direta ou angioplastia e que não tiveram uma resposta satisfatória ao tratamento clínico. Entre as drogas utilizadas para essa finalidade está a prostaglandina E1 (PGE1). OBJETIVO: Estudar os aspectos morfológicos na gênese de capilares sanguíneos em músculo esquelético do membro caudal de ratos submetidos à isquemia sob a ação da PGE1, administrada por via intramuscular (IM) ou endovenosa (EV). MÉTODOS: Foram utilizados 48 ratos, linhagem Wistar-UEM, distribuídos aleatoriamente em três grupos de 16, redistribuídos igualmente em dois subgrupos, observados no 7º e 14º dias, sendo um grupo controle onde apenas foi provocada a isquemia no membro, outro com a isquemia e a injeção da PGE1 via IM e outro com a isquemia e a injeção da PGE1 EV. Para análise dos resultados, foram realizadas a coloração com hematoxilina e eosina (HE) e coloração imuno-histoquímica. RESULTADOS: Constatou-se um aumento estatisticamente significativo no número de capilares nos subgrupos com o uso da PGE1 IM e EV, através da contagem nos cortes corados com HE. A imunomarcação não foi eficiente para a quantificação dos capilares. CONCLUSÕES: A PGE1, administrada por via IM ou EV, promoveu, após 14 dias de observação, um aumento no número de capilares no músculo esquelético de ratos submetido à isquemia, identificáveis histologicamente com a coloração em HE. A imunocoloração não permitiu estabelecer uma correlação com o aumento de vasos encontrados na coloração com HE.
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Batista RFC, Hidalgo MM, Hernandes L, Consolaro A, Velloso TRG, Cuman RKN, Caparroz-Assef SM, Bersani-Amado CA. Microscopic analysis of subcutaneous reactions to endodontic sealer implants in rats. J Biomed Mater Res A 2007; 81:171-7. [PMID: 17120202 DOI: 10.1002/jbm.a.30918] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
The reaction of subcutaneous tissues to Endofill, Endomethasone, Sealer 26, and AH-Plus was investigated microscopically after implantation of in rats polyethylene cannulae, obturated with gutta-percha cones and sealers, in rats. Empty polyethylene cannulae and cannulae filled with gutta-percha cones alone were used as controls. The inflammatory reactions caused by the sealers were evaluated 7, 14, and 30 days after implantation using a descriptive, histopathological analysis. Inflammatory reactions at each implant site were gauged as either absent, discreet, moderate, or intense, and scores from 0 to 3 were attributed, respectively. Microscopic analysis revealed that Endomethasone showed the best biological behavior for all postimplant periods, followed by Sealer 26 and AH Plus, which produced an irritating effect only during the initial pos-implant period. Endofill caused the severest irritation, producing an inflammatory reaction that ranged from moderate to intense over the entire experimental period. Reactions were more intense near those parts of the cannulae containing more sealer. These results reveal that the root canal sealers tested cause inflammation in rat, subcutaneous conjunctive tissue, the intensity of which may be related to the type and quantity of sealer used, and to postimplant period.
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Rocha JCB, Pedrochi F, Hernandes L, de Mello JCP, Baesso ML. Ex vivo evaluation of the percutaneous penetration of proanthocyanidin extracts from Guazuma ulmifolia using photoacoustic spectroscopy. Anal Chim Acta 2007; 587:132-6. [PMID: 17386764 DOI: 10.1016/j.aca.2007.01.002] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2006] [Revised: 12/21/2006] [Accepted: 01/04/2007] [Indexed: 10/23/2022]
Abstract
In this work photoacoustic spectroscopy has been applied to determine ex vivo the percutaneous penetration of proanthocyanidins present in extracts obtained from Guazuma ulmifolia, in rats. Lotion formulations containing 0.0663 mg of procyanidin B2 day(-1)animal(-1) were topically applied during 7, 10 and 13 days in each group of the animals. After the end of treatment the animals were killed, the skin dissected to remove the basal content, and the measurements were carried out as a function of the period of time of treatment. The results showed that despite the very low concentration of the active principle (procyanidin B2) in the lotion, the photoacoustic method was able to show the presence of optical absorption bands from this substance in the dermis region, evidencing once again that this method may be useful for studies of topically applied formulations of interest in the pharmacokinetic area.
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Affiliation(s)
- J C B Rocha
- Programa de Pós-Graduação em Ciências Farmacêuticas, Universidade Estadual de Maringá, Av. Colombo 5790, 87020-900 Maringá, PR, Brazil
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Hernandes L, Fernandes MDC, Pereira LCMDS, Freitas PD, Gama P, Alvares EP. Myenteric denervation differentially reduces enteroendocrine serotonin cell population in rats during postnatal development. J Mol Histol 2006; 37:95-100. [PMID: 17063384 DOI: 10.1007/s10735-006-9016-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2005] [Accepted: 01/30/2006] [Indexed: 12/26/2022]
Abstract
The enteric nervous and enteroendocrine systems regulate different processes in the small intestine. Ablation of myenteric plexus with benzalkonium chloride (BAC) stimulates epithelial cell proliferation, whereas endocrine serotonin cells may inhibit the process. To evaluate the connection between the systems and the influence of myenteric plexus on serotoninergic cells in rats during postnatal development, the ileal plexus was partially removed with BAC. Rats were treated at 13 or 21 days and sacrificed after 15 days. The cell bodies of myenteric neurons were stained by beta NADH-diaphorase to detect the extension of denervation. The number of enteroendocrine cells in the ileum was estimated in crypts and villi in paraffin sections immunostained for serotonin. The number of neurons was reduced by 27.6 and 45% in rats treated on the 13th and 21st days, respectively. We tried to establish a correlation of denervation and the serotonin population according to the age of treatment. We observed a reduction of immunolabelled cells in the crypts of rats treated at 13 days, whereas this effect was seen in the villi of rats denervated at 21 days. These results suggest that the enteric nervous system might control the enteroendocrine cell population and this complex mechanism could be correlated to changes in cell proliferation.
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Affiliation(s)
- Luzmarina Hernandes
- Morphophysiologycal Sciences Department, Universidade Estadual de Maringá, Avenida Colombo, 5790, CEP 87020-900, Maringá, Paraná, Brazil.
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Lopes GC, Sanches ACC, Nakamura CV, Dias Filho BP, Hernandes L, de Mello JCP. Influence of extracts of Stryphnodendron polyphyllum Mart. and Stryphnodendron obovatum Benth. on the cicatrisation of cutaneous wounds in rats. J Ethnopharmacol 2005; 99:265-72. [PMID: 15894137 DOI: 10.1016/j.jep.2005.02.019] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2005] [Revised: 02/24/2005] [Accepted: 02/24/2005] [Indexed: 05/02/2023]
Abstract
Stem bark of the two species Stryphnodendron polyphyllum Mart. and Stryphnodendron obovatum Benth., Leguminosae, was investigated for wound healing, antibacterial and antioxidant activity. These plants contain 12 and 19% tannins in their stem bark, respectively, and are widely used in traditional medicine in Brazil. The total content of phenolics of the crude extract (CE) of Stryphnodendron obovatum was 76.95 +/- 2.98% (CV = 3.87%) and of the ethyl-acetate fraction (EAF) was 89.13 +/- 0.34% (CV = 0.38%); whereas in Stryphnodendron polyphyllum the CE phenolics content was 51.62+/-1.53% (CV = 2.96%) and the EAF phenolics content was 59.00 +/- 1.91% (CV = 3.24%). The tannin content of CE from Stryphnodendron obovatum [36.58 +/- 0.35% (CV = 0.98%)] was about 11% higher than in CE from Stryphnodendron polyphyllum [25.43 +/- 0.96% (CV = 3.77%)]. The difference between the species was even greater in the EAF: in Stryphnodendron obovatum the EAF phenolics content was 55.01 +/- 0.36% (CV = 0.65%), whereas in Stryphnodendron polyphyllum the content was 36.16 +/- 0.42% (CV = 1.16%). The healing effect of ointments containing 2.5% crude lyophilised extract (PCE) and 2.5% ethyl-acetate lyophilised fraction (PEA) of the stem bark of Stryphnodendron polyphyllum and Stryphnodendron obovatum was studied in cutaneous wounds of Wistar rats after 4, 7 and 10 days of treatment. Epithelial cell proliferation in the area of re-epithelialisation of the wounds was evaluated by counting the metaphases blocked by vincristine sulfate. With PCE an increase in epidermal growth was observed after 4 and 7 days of treatment with Stryphnodendron polyphyllum, and after 7 and 10 days of treatment with Stryphnodendron obovatum. Wounds treated with PEA of Stryphnodendron obovatum showed increased epidermal growth only 4 days after the treatment; for Stryphnodendron polyphyllum, epidermal growth was observed after 4 and 7 days of treatment. Both the CE and the EAF fractions of Stryphnodendron polyphyllum and Stryphnodendron obovatum showed antibacterial activity against Staphylococcus aureus with MIC values of 125 and 250 microg/ml, respectively. Gram-negative bacteria tested were not inhibited by extracts and fractions at concentrations > 1000 microg/ml. The antioxidant activity through reduction of the DPPH radical in TLC, confirmed the anti-radical properties of these extracts in both species. CE and EAF of both species showed a radical scavenging activity (RSA) and protected DPPH from discolouration, already at 0.032 microg/ml. The extract from Stryphnodendron polyphyllum were more effective than those Stryphnodendron obovatum, although the former had a lower tannin content.
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Affiliation(s)
- Gisely C Lopes
- Programa de Pós-graduação em Ciências Farmacêuticas da Universidade Estadual de Maringá, Maringá, PR, BR-87020-900, Brazil
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Hernandes L, Gama P, Alvares EP. Ileal VIP submucous neurons: confocal study of the area enlargement induced by myenteric denervation in weanling rats. ACTA ACUST UNITED AC 2004; 117:69-72. [PMID: 14687703 DOI: 10.1016/j.regpep.2003.10.006] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Vasoactive Intestinal Peptide (VIP) neurons are maturing during suckling and weaning periods and the neuropeptide VIP is thought to be neurotrophic during ontogenesis. We have previously demonstrated that suckling rats with myenteric ablation have significantly higher mitotic index and an increase on villus height and crypt depth 15 days after treatment. In the current study, we measured the area of VIP neurons of submucous plexus in the ileum of weanling rats, in which myenteric neurons were ablated by serosal application of benzalkonium chloride (BAC). The area of VIP immunoreactive cell bodies, reconstructed under confocal microscope, was significantly increased in response to denervation. This result suggests that the myenteric plexus may have an inhibitory role over submucous plexus in the normal intestine. The enhanced production of VIP may be correlated with the increased epithelial proliferation induced by denervation in a critical period of life, from suckling to weaning time.
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Affiliation(s)
- L Hernandes
- Departamento de Histologia e Embriologia, Instituto de Ciências Biomédicas, USP, Av. Lineu Prestes, 1524-ICB 1, São Paulo, SP, 05508-900 Brazil
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Hernandes L, Pereira LCMDS, Alvares EP. Goblet cell number in the ileum of rats denervated during suckling and weaning. BIOCELL 2003; 27:347-51. [PMID: 15002751] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/29/2023]
Abstract
The enteric nervous system plays a role on the stimulation of secretory cells of intestinal epithelia. We have demonstrated that ablation of ENS stimulates epithelial cell proliferation. As goblet cells are important constituents of the epithelial sheet, it is mandatory to investigate separately this cell type. The myenteric plexus of the ileum of rats in postnatal development was partially removed by the serosal application of benzalkonium chloride (BAC). Three groups of animals were used: those where BAC application was at 13 days and sacrifice was at 15 (13/28-day-old) or 23 days after treatment (13/36-day-old), and those where BAC was applied at 21 days and rats were killed 15 days after treatment (21/36-day-old) . The number of goblet cells in the ileum was estimated in sections stained by periodic acid-Schiff (PAS) histochemistry. In the 13/28 and 21/36 groups, the number of goblet cells was significantly higher after BAC treatment. These results suggest that the myenteric denervation may have an acute effect on the number of goblet cell in suckling and weanling rats, probably through submucous plexus.
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Affiliation(s)
- Luzmarina Hernandes
- Departamento de Ciências Morfofisiológicas, Universidade Estadual de Maringá, Maringá, Paraná, Brazil.
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Zanoni JN, Hernandes L, Bazotte RB, Miranda Neto MHD. Terminal ileum submucous plexus: Study of the VIP-ergic neurons of diabetic rats treated with ascorbic acid. Arq Neuropsiquiatr 2002; 60:32-37. [PMID: 11965406 DOI: 10.1590/s0004-282x2002000100007] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The aim of this study was to evaluate the effect of the ascorbic acid (AA) supplementation on the neurons that produce the vasoactive intestinal peptide (VIP) in the submucous plexus of the ileum of rat, four months after the induction of experimental diabetes mellitus with streptozotocin. Three groups of rats were used: C - control, D - diabetic, DA - diabetic receiving AA. We have measured the immunoreactivity and area of 80 cellular bodies of VIP-ergic neurons from each studied group. In the diabetic animals, we have observed hyperphagia, polydipsia, and an increase of glycemia and glycated hemoglobin. The VIP-ergic neurons have presented an increase of their immunoreactivity and the highest profiles when compared to the other groups. In the diabetic animals supplemented with AA it has been observed a small reduction in the glycemia and the water and food intake. We have also noticed smaller immunoreactivity in their VIP-ergic neurons, similar to what we have observed in the control group animals (group C).
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Hernandes L, Bazotte RB, Gama P, Miranda-Neto MH. Streptozotocin-induced diabetes duration is important to determine changes in the number and basophily of myenteric neurons. Arq Neuropsiquiatr 2000; 58:1035-9. [PMID: 11105070 DOI: 10.1590/s0004-282x2000000600010] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The aim of present study was to evaluate the number and basophily of cell bodies of myenteric neurons in the ileum of rats with diabetes mellitus induced by streptozotocin. Four groups of rats were used: diabetes was induced in two (D) whereas the other two worked as controls (N). Animals were sacrificed six (6N, 6D) or nineteen (19N, 19D) weeks after diabetes induction. A segment of the terminal portion of the ileum of each rat was obtained and stained with Giemsa's solution, for whole-mount preparation studies. Forty fields were analyzed in each animal, and the number and basophily intensity of cell bodies were recorded. After counting, the following mean numbers of neurons/mm2 were obtained: 6N=593.1 +/- 95.75, 6D=639.1 +/- 130.8, 19N=580.1 +/- 175.6 and 19D=402.0 +/- 144.8. The analysis of basophily shown that highest frequency of neurons with weak/intermediary basophily was verified in 6D group (55.3%), whereas the groups 6N, 19N e 19D presented 38%, 36% e 40% respectively. The statistical analysis showed that a long period is necessary to decrease the number of neurons/mm2 in the rat ileum after diabetes induction, and that there was a reduction in basophily intensity in diabetic rats after 6 weeks of treatment, and such cells do not recover after a longer period (19 weeks).
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Affiliation(s)
- L Hernandes
- Department of Morphophysiological Sciences, Universidade Estadual de Maringá, Brazil.
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